Charging method and apparatus

Patent metadata

Field	Value
Publication number	US-10164457-B2
Application number	US-201715484787-A
Country	US
Kind code	B2
Filing date	Apr 11, 2017
Priority date	Dec 30, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A charging method and apparatus are provided. The charging method includes obtaining power supply energy needed by a storage system during a power failure, detecting a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, where the supercapacitor is configured to provide the power supply energy to the storage system, determining a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy, and charging the supercapacitor according to the determined charging voltage. Therefore, the supercapacitor can be charged according to an actual charging voltage of the supercapacitor such that a life of the supercapacitor is prolonged.

First claim

What is claimed is:

1. A charging method, comprising:
obtaining a power failure sequence and a power failure duration of a plurality of devices during a power failure;
obtaining power information of a storage system after the devices have encountered the power failure;
obtaining a power curve according to the power failure sequence, the power failure duration, and the power information of the storage system;
performing integration on the power curve falling within the power failure duration of all the devices to obtain a power supply energy;
detecting a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, the supercapacitor being configured to provide the power supply energy to the storage system;
determining a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy; and
charging the supercapacitor according to the charging voltage.

2. The charging method of claim 1 , further comprising:
obtaining a first power information of each of devices operating in the storage system, the power curve being obtained according to the first power information.

3. The charging method of claim 2 , wherein obtaining the first power information of each of the devices comprises:
sampling powers of each of the devices in order to obtain at least one piece of second power information of each of the devices; and
selecting, from the at least one piece of second power information of each of the devices, second power information comprising a maximum power value as the first power information of each of the devices.

4. The charging method of claim 2 , wherein obtaining the first power information of each of the devices comprises:
obtaining configuration information of each of the devices; and
obtaining the first power information of each of the devices from the configuration information of each of the devices.

5. The charging method of claim 1 , wherein determining the charging voltage of the supercapacitor comprises:
determining a capacitance value of the supercapacitor according to the environmental temperature information; and
calculating the charging voltage of the supercapacitor according to the capacitance value and the power supply energy.

6. A charging apparatus, comprising:
a processor, and
a non-transitory computer-readable storage medium coupled to the processor and configured to store programming instructions for execution by the processor, the programming instructions instructing the processor to:
obtain a power failure sequence and a power failure duration of a plurality of devices during a power failure;
obtain power information of a storage system after the devices have encountered the power failure;
obtain a power curve according to the power failure sequence, the power failure duration, and the power information of the storage system;
perform integration on the power curve falling within the power failure duration of all the devices to obtain a power supply energy;
detect a temperature of an environment in which a supercapacitor is located in order to obtain environmental temperature information of the supercapacitor, the supercapacitor being configured to provide the power supply energy to the storage system;
determine a charging voltage of the supercapacitor according to the environmental temperature information and the power supply energy, and
charge the supercapacitor according to the charging voltage.

7. The charging apparatus of claim 6 , wherein the programming instructions further instruct the processor to obtain a first power information of each of devices operating in the storage system, the power curve being obtained according to the first power information.

8. The charging apparatus of claim 7 , wherein when obtaining the first power information of each of the devices, the programming instructions further instruct the processor to:
sample powers of each of the devices in order to obtain at least one piece of second power information of each of the devices; and
select, from the at least one piece of second power information of each of the devices, second power information comprising a maximum power value as the first power information of each of the devices.

9. The charging apparatus of claim 7 , wherein when obtaining the first power information of each of the devices, the programming instructions further instruct the processor to:
obtain configuration information of each of the devices; and
obtain the first power information of each of the devices from the configuration information of each of the devices.

10. The charging apparatus of claim 6 , wherein when determining the charging voltage of the supercapacitor, the programming instructions further instruct the processor to:
determine a capacitance value of the supercapacitor according to the environmental temperature information; and
calculate the charging voltage of the supercapacitor according to the capacitance value and the power supply energy.

Assignees

• Huawei Tech Co Ltd

Inventors

• Peng Qi

Classifications

• H02J7/975

  in response to temperature · CPC title

• H02J9/061

  for DC powered loads · CPC title

• H02J7/345

  using capacitors as storage or buffering devices · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01G11/14 Primary

  Arrangements or processes for adjusting or protecting hybrid or EDL capacitors (emergency protective circuit arrangements specially adapted for capacitors, and effecting automatic switching in the event of an undesired change from normal working conditions H02H7/16; emergency protective circuit arrangements for limiting excess current or voltages without disconnection H02H9/00) · CPC title